/* 프롬프트 엔지니어링 강의 노트 스타일시트 */

:root {
  --primary-color: #2563eb;
  --secondary-color: #3b82f6;
  --accent-color: #60a5fa;
  --background-color: #f8fafc;
  --text-color: #1e293b;
  --heading-color: #1e40af;
  --link-color: #2563eb;
  --code-bg-color: #f1f5f9;
  --border-color: #cbd5e1;
  --nav-bg-color: #1e40af;
  --nav-text-color: #ffffff;
  --table-header-bg: #dbeafe;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  max-width: 100%;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 2rem 0;
  margin-bottom: 2rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--heading-color);
  margin: 1.5rem 0 1rem 0;
  line-height: 1.3;
}

h1 {
  font-size: 2.5rem;
  margin-top: 0.5rem;
  text-align: center;
  color: white;
}

h2 {
  font-size: 2rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent-color);
  margin-top: 2.5rem;
}

h3 {
  font-size: 1.5rem;
  margin-top: 2rem;
}

h4 {
  font-size: 1.25rem;
}

p, ul, ol {
  margin-bottom: 1.5rem;
}

a {
  color: var(--link-color);
  text-decoration: none;
  transition: color 0.3s;
}

a:hover {
  text-decoration: underline;
  color: var(--primary-color);
}

code {
  font-family: 'Fira Code', monospace;
  background-color: var(--code-bg-color);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9rem;
}

pre {
  background-color: var(--code-bg-color);
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--border-color);
}

pre code {
  background-color: transparent;
  padding: 0;
}

blockquote {
  border-left: 4px solid var(--accent-color);
  padding-left: 1rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: #4b5563;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

th, td {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
}

th {
  background-color: var(--table-header-bg);
  font-weight: bold;
  text-align: left;
}

tr:nth-child(even) {
  background-color: #f8fafc;
}

.navbar {
  background-color: var(--nav-bg-color);
  padding: 1rem 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  color: var(--nav-text-color);
  font-size: 1.25rem;
  font-weight: bold;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--nav-text-color);
  text-decoration: none;
  transition: opacity 0.3s;
}

.nav-links a:hover {
  opacity: 0.8;
  text-decoration: none;
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  h3 {
    font-size: 1.25rem;
  }
  
  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }
}

.highlight {
  background-color: #fef9c3;
  padding: 0.2rem;
  border-radius: 4px;
}

.info-box {
  background-color: #dbeafe;
  border-left: 4px solid var(--primary-color);
  padding: 1rem;
  margin: 1.5rem 0;
  border-radius: 4px;
}

.warning-box {
  background-color: #fee2e2;
  border-left: 4px solid #ef4444;
  padding: 1rem;
  margin: 1.5rem 0;
  border-radius: 4px;
}

.tip-box {
  background-color: #d1fae5;
  border-left: 4px solid #10b981;
  padding: 1rem;
  margin: 1.5rem 0;
  border-radius: 4px;
}

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--primary-color);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: background-color 0.3s;
}

.back-to-top:hover {
  background-color: var(--secondary-color);
  text-decoration: none;
}

footer {
  background-color: #1e293b;
  color: white;
  padding: 2rem 0;
  margin-top: 3rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 1rem 0;
}

.footer-links a {
  color: white;
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

.copyright {
  font-size: 0.9rem;
  margin-top: 1rem;
}